<?php
/**
 * Created by PhpStorm.
 * User: von
 * Date: 2017/12/12
 * Time: 13:40
 */

/**
 * 格式化金额
 *
 * @param int $money
 * @param int $len
 * @param string $sign
 * @return string
 */
namespace common\helps;
class formatMoney {
    static function format_money($money, $len=2, $sign=''){
        $negative = $money > 0 ? '' : '-';
        $int_money = intval(abs($money));
        $len = intval(abs($len));
        $decimal = '';//小数
        if ($len > 0) {
            $decimal = '.'.substr(sprintf('%01.'.$len.'f', $money),-$len);
        }
        $tmp_money = strrev($int_money);
        $strlen = strlen($tmp_money);
        $format_money ='';
        for ($i = 3; $i < $strlen; $i += 3) {
            $format_money .= substr($tmp_money,0,3).',';
            $tmp_money = substr($tmp_money,3);
        }
        $format_money .= $tmp_money;
        $format_money = strrev($format_money);
        return $sign.$negative.$format_money.$decimal;
    }
}
